Gas-engine.



No. 784,760. PATENTED MAR. 14, 1905. G J. ROUSSEAU & E. O. PERRIS.

GAS ENGINE. APPLIO ATION FILED APR.11,1903. I

l m u om/L'o as UNITED STATES Patented March 14, 1905.

PATENT OFFICE.

CANFIELD J. ROUSSEAU, OF BRIDGEPORT, AND ELMER C. FERRIS, OF STAMFORD, CONNECTICUT, ASSIGNORS, BY MESNE ASSIGNMENTS, TO UNIVERSAL KEROSENE ENGINE COMPANY, A CORPORATION OF NElV YORK.

GAS-ENGINE.

SPECIFICATION forming part of Letters Patent No. 784,760, dated March 14:, 1905.

Application filed April 11, 1903. Serial No. 152,103.

To all whmn it may concern:

Be it known that we, OANFIELD J. RoUs SEAU, a subject of the King of Great Britain, and a resident of Bridgeport, and ELMER C. Fnnnis, a citizen of the United States, and a resident of Stamford, in the county of Fairfield and State of Connecticut, have invented certain new and useful Improvements in Gas- Engines, of which the following is a specification, taken in connection with the accomp any- .ing drawings, which form a part of the same.

This invention relates to gas-engines such as are specially adapted for use with liquid hydrocarbons, and it relates especially to a device located in the working cylinders for vaporizing the liquid hydrocarbon supplied to said working cylinders of such gas-engines and mixing said vapor with the other constituents of the charge.

In the accompanying drawings, Figure 1 is a vertical sectional view illustrating an embodiment of this invention. Fig. 2 is an enlarged detail sectional view. Fig. 3 is a transverse section of the same. Fig. 4 shows a modified construction.

In the embodiment of this invention shown in the drawings, 1 is the working cylinder of a gas-engine, provided with the usual water-jacket 2. This cylinder, as is indicated, is formed with the exhaust-port 3 and the air-port 4, which communicates with the crank-casing when the piston is raised. The admission-port 5 is also provided, which communicates, as is indicated, with the port 6, opening into the inclosed crank-casing 7, which carries the bearings S. The piston 9 is of usual construction and is formed with the deflecting-flange 10. The wrist-pin 11 connects this piston to the connecting-rod 12, and the lower end 15 of this connectingrod is secured to the cranks 14 in the usual way, so that the crank-shaft I3 is rotated by the reciprocating piston. The oil-pump 24 is mounted at one side of the cylinder and is formed with the inlet-valve 25, connecting with the supply-pipe 26. The valve 27 connects with the oil-pipe 28 and supplies the oil in regulated quantities to the valved nipple 29, by which it is supplied to the injector nozzle 33. For operating the oil-pump the plunger 30 is provided with the collar 31 and is mounted in the bearings indicated, so as to be normally pressed downward by the spring 32. The crank-shaft carries the eccentric 20,'which operates the eccentric-strap 21, pivoted to the rock-lever 23. In this way the vibrating end 22 of the rock-lever moves upward at the proper time into engagement with the pump-plunger 30 and gives to this plunger a slight movement, so as to feed the desired quantity of oil into the engine, the

oil passing through the injector being substantially vaporized thereby and issues in an upward direction against the cylinder-head 16, adjacent the igniter 17, which of course is heated in the usual way. As indicated in detail in Fig. 2, the injector may be formed with a screw-threaded end 34, by which it may be screwed into the cylinder-wall, the portion not threaded projecting into the cylinder interior, as indicated. A suitable passage 40, preferably of capillary size, is formed through the injector. The vaporizer 35 is attached to or formed integrally with the injector, so as to form an extension thereof still further projecting into the interior of the cylinder, and is preferably given an en.- larged form. (Indicated in the drawings.) It is formed, preferably, of brass or other metal having a high specific heat, so as to hold said heat and heat the vaporized oil discharged upon it before it leaves the discharge end 36 of the vaporizer, \vhichis preferably curved so as to discharge the vapor against the cylinder-head, as shown. The vaporizer may be provided with a movable cover 37, hinged, as indicated, at 38, and this cover may be provided with clips 39, which engage the vaporizer frictionally and secure the cover in position, except when the same is swung away by the application of a slight force applied by the hand of the operator or in similar manner. By swinging up the cover, as india, any dirt or cated in dotted lines in Fi 2 other material which has accumulated within the vaporizer may be readily removed. The vaporizer may, however, have the open formation indicated in Fig 4 without any cover and serves equally well under these conditions to heat and vaporize the fluid hydrocarbon fed to the engine. The passage 40 is, as indicated, formed substantially in line with the lower inner surface of the straight part of the vaporizer, and is so shaped as to discharge the oil in a fine stream upon and along the said inner surface of the heated metal, which instantly vaporizes the fluid so brought in contact with and distributed along its surface.

The mode of operation of our invention is as follows: The vaporizer 35, projecting into the zone of fiercest combustion in the enginecylinder, is preferably in the form of a trough of U-shaped cross-section and is kept at a high temperature sufficient to instantly vaporize any small quantity of oil brought in contact with it. The small quantity of oil necessary for each charge is forced by the pump through the capillary passage 40 in a fine stream, which is shot along the entire inner surface of the vaporizer 35, and thereby instantly absorbs the largest possible amount of heat therefrom. This spraying of the fine stream of oil along the surface of the vaporizer tends mechanically to break up the fluid into its constituent molecules and places it in the most favorable condition for instant vaporization. The heat absorbed from the vaporizer 35 therefore produces an instantaneous and complete vaporization of the oil, and the vapor is discharged and distributed by the curved end '36 of the vaporizer about the interior of the cylinder and against the cylinder-head, thereby producing a complete, uniform, and immediate mixture between the 0il-vapor and the compressed air in which it is to burn as soon as a portion of the combustible mixture has been forced into the igniter 17 by the piston 9.

The advantages of our invention comprise the complete and instantaneous vaporization of the fuel produced by storing up of heat from each combustion-stroke in the vaporizer, which projects into the cylinder and delivers the same to the charge of oil for the succeeding stroke under conditions most favorable to instantaneous and complete vaporization, together with the thorough mixing of the vapor so formed with air to form a combustible charge.

It is of course understood by those familiar with this art that many variations may be made in the form, proportions, and numbers of parts of this machine. Furthermore, portions of this machine may be used without employing all of the same and may be used in connection with other devices without losing the advantages of this invention. We do not, therefore, desire to be limited to the disclosure which has been made in this case; but

What we do claim as new, and what we desire to secure by Letters Patent, is set forth in the appended claims:

1. The combination of a cylinder and piston reciprocating therein,a fuel-injector having a nozzle with a capillary discharge-orifice located near the inner wall of the cylinder, means for forcing regulated quantities of liquid fuel through said injector, a vaporizer consisting of a body of metal located wholly within the working cylinder adjacent to the discharge-nozzle, having its surface substantially in line with the line of discharge therefrom, and means for igniting the charge of vapor so delivered to the cylinder.

2. The combination of a cylinder and piston. reciprocating therein,a fuel-injector having a nozzle with a capillary discharge-orifice located near the inner wall of the cylinder,-

means for forcing regulated quantities of liquid fuel through said injector, a vaporizer consisting of a body of metal located wholly within the working cylinder adjacent to the discharge-nozzle, having its surface substantially in line with the line of discharge therefrom, and means for igniting the charge of vapor so delivered to the cylinder, said vaporizer having a portion of its surface farthest from the nozzle curved toward the cylinder head.

3. The combination of a cylinder and piston reciprocating therein,a fuel-injector having a nozzle with a capillary discharge-orifice located near the inner Wall of the cylinder, means for forcing regulated quantities of liq. uid fuel through said injector, a vaporizer consisting of a body of metal. located wholly within the working cylinder adjacent to the discharge-nozzle, having its surface substantially in line with the line of discharge therefrom, and means for igniting the charge of vapor so delivered to the cylinder, said vaporizer having a portion of its surface farthest from the nozzle curved toward the cylinderhead, the main body of the vaporizer being trough-shaped.

4. In a gas-engine the combination of a cylinder and piston reciprocating therein, a fuel-injector for said cylinder, means for forcing regulated quantities of liquid fuel through said injector, a vaporizer projecting into the interior of said cylinder, in the path of the discharge of said injector, and means for igniting the charge of vapor so delivered to the cylinder, said vaporizer comprising a straight portion extending substantially in the line of discharge of the injector and a discharge end curved toward the cylinder-head, the main body of the vaporizer being trough-shaped and provided with a removable cover.

5. The combination of a cylinder and piston reciprocating therein,a fuel-injector hav ing a nozzle witha capillary discharge-orifice ICC located near the inner Wall of the cylinder,

vapor so delivered to the cylinder, together With separate means for supplying air to said 1 cylinder.

CANFIELD J. ROUSSEAU. ELMER O. FERRIS. Witnesses:

JEssIE B. KAY, ALEXANDER G. MIToHELL. 

